unsigned int ep_index;
struct xhci_ring *ep_ring;
struct xhci_virt_ep *ep;
+ struct xhci_virt_device *vdev;
xhci = hcd_to_xhci(hcd);
spin_lock_irqsave(&xhci->lock, flags);
/* Make sure the URB hasn't completed or been unlinked already */
ret = usb_hcd_check_unlink_urb(hcd, urb, status);
- if (ret || !urb->hcpriv)
+ if (ret)
goto done;
+
+ /* give back URB now if we can't queue it for cancel */
+ vdev = xhci->devs[urb->dev->slot_id];
+ urb_priv = urb->hcpriv;
+ if (!vdev || !urb_priv)
+ goto err_giveback;
+
+ xhci_dbg(xhci, "Cancel URB %p\n", urb);
+ xhci_dbg(xhci, "Event ring:\n");
+ xhci_debug_ring(xhci, xhci->event_ring);
+ ep_index = xhci_get_endpoint_index(&urb->ep->desc);
+ ep = &vdev->eps[ep_index];
+ ep_ring = xhci_urb_to_transfer_ring(xhci, urb);
+ if (!ep || !ep_ring)
+ goto err_giveback;
+
+ xhci_dbg(xhci, "Endpoint ring:\n");
+ xhci_debug_ring(xhci, ep_ring);
+
temp = xhci_readl(xhci, &xhci->op_regs->status);
if (temp == 0xffffffff || (xhci->xhc_state & XHCI_STATE_HALTED)) {
xhci_dbg(xhci, "HW died, freeing TD.\n");
- urb_priv = urb->hcpriv;
for (i = urb_priv->td_cnt;
- i < urb_priv->length && xhci->devs[urb->dev->slot_id];
+ i < urb_priv->length;
i++) {
td = urb_priv->td[i];
if (!list_empty(&td->td_list))
if (!list_empty(&td->cancelled_td_list))
list_del_init(&td->cancelled_td_list);
}
-
- usb_hcd_unlink_urb_from_ep(hcd, urb);
- spin_unlock_irqrestore(&xhci->lock, flags);
- usb_hcd_giveback_urb(hcd, urb, -ESHUTDOWN);
- xhci_urb_free_priv(xhci, urb_priv);
- return ret;
+ goto err_giveback;
}
- xhci_dbg(xhci, "Cancel URB %p\n", urb);
- xhci_dbg(xhci, "Event ring:\n");
- xhci_debug_ring(xhci, xhci->event_ring);
- ep_index = xhci_get_endpoint_index(&urb->ep->desc);
- ep = &xhci->devs[urb->dev->slot_id]->eps[ep_index];
- ep_ring = xhci_urb_to_transfer_ring(xhci, urb);
- if (!ep_ring) {
- ret = -EINVAL;
- goto done;
- }
-
- xhci_dbg(xhci, "Endpoint ring:\n");
- xhci_debug_ring(xhci, ep_ring);
-
- urb_priv = urb->hcpriv;
-
for (i = urb_priv->td_cnt; i < urb_priv->length; i++) {
td = urb_priv->td[i];
list_add_tail(&td->cancelled_td_list, &ep->cancelled_td_list);
done:
spin_unlock_irqrestore(&xhci->lock, flags);
return ret;
+
+err_giveback:
+ if (urb_priv)
+ xhci_urb_free_priv(xhci, urb_priv);
+ usb_hcd_unlink_urb_from_ep(hcd, urb);
+ spin_unlock_irqrestore(&xhci->lock, flags);
+ usb_hcd_giveback_urb(hcd, urb, -ESHUTDOWN);
+ return ret;
}
/* Drop an endpoint from a new bandwidth configuration for this device.